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Finding the Fourth Proportional to 679,104.81, 937,093.05 and 392,717.16

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Solution

The fourth proportional to 679,104.81, 937,093.05 and 392,717.16 is: 541,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,104.81 : 937,093.05 = 392,717.16 : x
  2. Step 2: Convert to fraction form
    679,104.81/937,093.05 = 392,717.16/x
  3. Step 3: Cross multiply
    679,104.81x = 937,093.05 × 392,717.16
  4. Step 4: Simplify right side
    679,104.81x = 368,012,521,251.74
  5. Step 5: Solve for x
    x = 368,012,521,251.74/679,104.81
  6. Step 6: Final answer
    x = 541,908.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.